Update add_two_numbers.c

Author: ayush-shuklas

002_add_two_numbers/add_two_numbers.c

@@ -1,102 +1,8 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-/* Definition for singly-linked list. */
-struct ListNode {
-    int val;
-    struct ListNode *next;
-};
-
-static struct ListNode* addTwoNumbers(struct ListNode* l1, struct ListNode* l2)
-{
-    int carry = 0;
-    struct ListNode dummy;
-    struct ListNode *p = l1, *prev = &dummy;
-
-    dummy.next = p;
-    while (l1 != NULL || l2 != NULL) {
-        int sum = 0;
-
-        if (l1 != NULL) {
-            sum += l1->val;
-            l1 = l1->next;
-        }
-
-        if (l2 != NULL) {
-            if (p == NULL) {
-                /* l2 longer than l1 */
-                prev->next = l2;
-                p = l2;
-            }
-            sum += l2->val;
-            l2 = l2->next;
-        }
-
-        sum += carry;
-        carry = sum / 10;
-        p->val = sum % 10;
-        prev = p;
-        p = p->next;
-    }
-
-    if (carry) {
-        p = malloc(sizeof(*p));
-        p->val = carry;
-        p->next = NULL;
-        prev->next = p;
-    }
-    
-    return dummy.next;
-}
-
-static struct ListNode *node_build(const char *digits)
-{
-    struct ListNode *res, *p, *prev;
-    int first = 1;
-    int len = strlen(digits);
-    const char *c = digits + len - 1;
-    prev = NULL;
-    while (len-- > 0) {
-        p = malloc(sizeof(*p));
-        if (first) {
-            first = 0;
-            res = p;
-        }
-        p->val = *c-- - '0';
-        p->next = NULL;
-        if (prev != NULL) {
-            prev->next = p;
-        }
-        prev = p;
-    }
-
-    return res;
-}
-
-static void show(struct ListNode *ln)
-{
-    int sum = 0, factor = 1;
-    while (ln != NULL) {
-        sum += ln->val * factor;
-        factor *= 10;
-        ln = ln->next;
-    }
-    printf("%d\n", sum);
-}
-
-int main(int argc, char **argv)
-{
-    if (argc < 3) {
-        fprintf(stderr, "Usage: ./test n1 n2\n");
-        exit(-1);
-    }
-
-    struct ListNode *l1 = node_build(argv[1]);
-    struct ListNode *l2 = node_build(argv[2]);
-    struct ListNode *res = addTwoNumbers(l1, l2);
-    show(l1);
-    show(l2);
-    show(res);
-    return 0;
-}
+#include<stdi.h>
+int main()
+{
+    int a,b,sum;
+    printf("enter numbers\n");
+    scanf("%d %d",&a &b);
+    sum = a+b;
+    printf("sum is %d",sum);